i think your missing the point ,there are many reasons why the bolts might have beeen missing it doesnt mean its unsafe the aircraft could have been flying with a concession to cover the defect who knows? without the facts wild speculation about ryanair operating unsafe aircraft is ridiculous and i very much doubt that you have the technical expertise to make such a judgement so id say with all due respect , wind yer neck in until you are in full possesion of the facts